Whoops! Didn't mean to hit the enter key - to finish the thought: I think the period of the war should have a bearing on the drug abuse in the field being depicted in a diorama. While marijuana was widely available, even in "factory-made", filtered, form in packs and full cartons (Paxtons) during my time, I never saw, smelled or heard of its use in combat situations. Hard drugs in our unit were unheard of. The very idea of smoking a joint in a laager or FSB, in or around our tracks, is ludicrous to me. I can't speak for the "cannon-cockers" and others in the center of the FSB, but we grunts on the perimeter would not have dreamed of it. But I have been told by the CO of my own Charlie Company who commanded when they were the first unit to cross the Cambodian border in May, 1970, that combat refusal by some elements and drug abuse was widespread in the ranks. That's hearsay, but I am certain things had changed a great deal by then, and even more so during my brother's tour of duty.